ES2932263T3 - Carrying device on the back, in particular for a battery pack - Google Patents

Abstract

1. backpack device, in particular for a battery.2.1. The invention relates to a backpack device, in particular to a backpack battery pack for supplying electrical power to portable electrical devices, in particular electrically powered gardening and/or forestry equipment, the backpack device comprising a carrying base ( 3) and a strap unit transport device (4) for the transport base.2.2. According to one aspect of the invention, the backpack device includes a holding device (6) for releasably holding a battery pack in a carrying position on the carrying base, wherein the holding device comprises a coupling device (8) on the support base for pivotally engaging the battery pack in a docking position and a clamping device (9) on the support base for holding the battery pack in the rotated support position towards the support base with respect to the docking position. The coupling device is arranged in a lower area (3u) of the support base.2.3. Use it, for example, as a backpack device for a battery pack for electrically powered gardening and/or forestry equipment. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Carrying device on the back, in particular for a battery pack

The invention relates to a back carrying device comprising a support base and a carrying strap unit for the supporting base, wherein the carrying strap unit comprises a shoulder strap unit, a hip strap and a hinge unit connecting the hip strap unit to the support base. The support base serves to receive an object to be transported, for example by fixing the object to the support base or introducing the object into a receiving space of the support base. The carrying strap unit allows the user to carry the support base with the object on or within it on the back.

In particular, the back-carrying device can be designed to carry a battery pack, in particular a back-carrying battery pack for supplying electric power to hand-held electrical appliances, in particular gardening and/or forestry tools. electrically powered. Hand-held electrical appliances in this context are primarily electrical appliances that are hand-held or ground-guided, particularly those used for gardening and/or forestry, such as chainsaws, hedge trimmers, leaf blowers , sweepers, mowers and scarifiers, to name just a few representative examples of use. The battery pack is designed to be carried on the user's back by means of the backpack system and provides the electrical energy required by the electrical appliance in use, for which it has suitable battery cells, which in the present context means any accumulator. or conventional battery cells. Typically, the battery cells are arranged to form a battery cell block.

In the application for transporting a battery pack, the back transport device has a holding device for holding the battery pack in a transport position on the support base. Various fixation or retention mechanisms for the immobilization device are known. In one of these known types, the battery pack is applied in a translational approximation movement to the support base, which can be formed, for example, by a support structure in the form of a plate, and then in a movement of displacement perpendicular to the approach movement, for example from top to bottom on the support base, to the support position, see in this connection, for example, the parallel disclosure documents US 2016/0345714 A1 and EP 3 106 565 A2 , disclosure document WO 2018/007111 A1 and utility model documents D ^e 202012013284 U1 and DE 202013011447 U1. Unless otherwise indicated, reference is made to the orientation of the pack when it is on a user's back, or to the orientation of the battery pack in its carrying position when the pack is on a user's back. In the alternative type considered here, the clamping device has a docking device in the support base for pivotally engaging the battery pack in a docking position and a locking device in the support base for retaining the battery pack in place. the transport position pivoted towards the support base in relation to the docking position.

The disclosure document EP 2819207 A1 discloses such a holding device, wherein the coupling device is formed by an upper edge of the support base, which can overlap a hook-shaped formation of an upper edge of the package. such that a certain rotational mobility of the battery pack relative to the support base is maintained with the upper edge of the support base as pivot axis. Two laterally arranged locking projections in the lower region of the support base act as a locking device, which interact with corresponding counter-locking projections in the lower lateral region of the battery to form a releasable snap connection, whereby a handle it is arranged at the bottom of this battery, that is to say on its underside in the transport position on the back of a user.

The shoulder strap unit serves as a transport aid for the user, and for corresponding applications it is further expedient if the transport strap unit comprises the pelvic strap unit and the hinge unit which hingesly connects the pelvic strap unit with support base. In the aforementioned utility model specification DE 202013 011 447 U1, the hinge unit comprises a hinge through which a cross member is coupled to the support base to be pivotable about a substantially horizontal pivot axis perpendicular to a plane of the support base in the form of a plate, the cross member serving as a support for a hip belt. In a back carrying device disclosed in disclosure document DE 102015 002 724 A1, the hinge unit comprises a hinge, preferably formed by a fabric/film hinge, by means of which the pelvic belt unit is connected to the support base to be pivotally movable about a substantially horizontal pivot axis parallel to a plane of the plate-shaped support base. The purpose is to allow the lap belt unit to collapse when the back support device is stationary, thus preventing the lap belt unit from obstructing the vertical positioning of the back support device.

In US Patent Specification 5,954. 250, a back carrying device of the type mentioned according to the generic term of claim 1 is disclosed, wherein the articulation unit comprises a double articulation, whereby a first articulation part is held on a support plate. the lap belt unit so as to be pivotable about a first pivot axis perpendicular to the support base, and a second hinge part is held by a hinge pin about a second pivot axis defined by its longitudinal axis and perpendicular to the first pivot axis, second pivot axis defined by its longitudinal axis, perpendicular to the first pivot axis, where both axes of rotation are at the same height and the hinge pin and therefore the second axis of The pivot is located at a distance behind the lap belt unit plate and where the support base can be attached to the second hinge part behind the c-pin. connection.

In addition, back support devices are known in which the support belt unit has at least one shoulder belt unit that can be detachably connected to the support base, which is usually designed so that the unit The shoulder belt can be adjusted to adjust the height of the support base. Conventionally, this is usually done by using a belt strap for a respective shoulder strap of the shoulder strap unit, which is adjustable in length.

The invention is based on the technical problem of providing a back carrying device of the aforementioned type, which has been improved in comparison with the mentioned back carrying devices of the prior art, in particular with regard to the articulated connection of the pelvic belt unit to the support base and, if necessary, additionally with regard to the type of attachment of a battery pack to the support base and/or with regard to the adjustability of the shoulder belt unit.

The invention solves this problem by providing a back carrying device having the features of claim 1. Other advantageous embodiments of the invention are indicated in the subclaims, the text of which forms part of the description by reference.

According to the invention, the articulation unit includes a double articulation by which the pelvic belt unit is connected to the support base to be pivotable about two pivot axes, wherein one of the two pivot axes extends substantially parallel to one plane of the support base plate and the other pivot axis extends substantially perpendicular to the plane of the support base plate, and wherein one pivot axis extends substantially between two mutually facing lateral edges of the support base plate. lap belt unit, on the one hand, and the support base, on the other, and the other pivot axis extends offset with respect to this pivot axis in a direction opposite to the lap belt unit.

This represents a very advantageous embodiment for a pivot connection of the pelvic belt unit to the support base around two axes with advantageous kinematics for the pivotability of the pelvic belt unit relative to the support base, without that two individual articulation units are required for this and without two of these articulations being able to interfere with each other. By means of this double articulation, the pelvic belt unit can rotate both around the pivot axis essentially parallel to the plane of the supporting base plate and around the pivot axis essentially perpendicular to the plane of the supporting base plate to the desired extent with respect to the base of support. Both of these pivotal movements are advantageous in providing adequate evasive movements of the lap belt unit relative to the support base.

In another embodiment of the invention, the articulation unit, and therefore also the double articulation, is formed by a separate component, which is connected to the lap belt unit on the one hand and to the lap belt unit on the other. the support base. This articulation unit can be made with high load capacity and durability and does not restrict the choice of material for the pelvic belt unit and the support base.

In another embodiment of the invention, the shoulder belt unit is removably connectable to the support base and comprises at least one flexible rigid belt support, removably engageable on the support base. at several different heights by means of a latching mechanism, and at least one flexible belt strap connected to it. The rigid design of the belt mount allows for a very stable connection of the shoulder belt unit to the support base. The ability to lock the belt support at several different heights on the support base provides advantageous height adjustability of the shoulder belt unit. The flexible and non-rigid design of the belt strap, in contrast to the belt support, makes it possible for the user to carry the back-carrying device comfortably in the usual way.

In one embodiment of the invention, the latch mechanism provides a plurality of latches for the at least one strap holder at different heights of the support base, wherein the respective latch includes a latch release position and a latch locking position which is offset upward relative to the latch release position and between which the strap support is vertically movable on the support base. In the unlocked position of the latch, the belt holder can be attached to or removed from the holder base at the desired height. In the engaged position, the belt holder is hooked to the support base so that it cannot be separated from it. To release the belt holder from the support base, the belt holder must be moved down to the unlocked position. The upwardly offset arrangement of the latch locking position relative to the latch release position has the advantage that a downward-acting weight force on the support base cannot cause the belt support to move unintentionally to the latch release position. Rather, this weight force of the support base acts in the direction of holding the belt support securely in the latch-release position.

In one embodiment of the invention, the latching mechanism has an unlockable latching latch that keeps the belt holder locked in the respective latching-release position. Only after this locking mechanism has been unlocked by the user can the belt mount be moved down to the latch unlock position on the mount base and then removed from or reattached from the mount base on it at a different height. This provides additional security for the height-adjustable mounting of the belt holder on the holder base.

In a further embodiment of the invention, the backpack carrier is adapted to allow a user to carry a battery pack on the back to supply electrical power to hand-held electrical appliances, which may be, in particular, power tools. electrically powered gardening and/or forestry. To this end, the back transport device includes a holding device for securely holding the battery pack in a transport position on the support base, the holding device comprising a docking device on the support base for pivotally engaging the battery pack in a docking position and a locking device on the support base for retaining the battery pack in the transport position pivoted towards the support base opposite the docking position. Characteristically, the coupling device is arranged in a lower region of the support base.

Thanks to these features of the backpack carrier, the battery pack can be attached to the backpack carrier in a very advantageous manner. To do this, it is attached to the lower area of the support base via the coupling device and can then be swiveled towards the support base to reach the transport position. If the battery pack is equipped with a handle on its top, it can be held by the handle while it is attached to the lower area of the support base and then rotated towards the support base in the transport position.

In this way, manipulation of the battery pack when attaching and detaching it from the back support can be limited to the upper part of the battery pack and the back support, and the user does not necessarily have to perform manipulation actions on the upper part. battery pack and back support. This often makes handling easier for the user when he wants to place the battery pack on the rear stand placed on the ground or on a storage surface. In addition, the side of the support base to which the battery pack is to be attached remains clearly visible to the user after the battery pack has been attached, which may make it easier for the user to rotate into the transport position. The attachment of the battery pack in the lower area of the support base is also advantageous for stability reasons, since the tilting moment of the rear carrier associated with the attachment of the battery pack can be kept low, in particular significantly lower than in the case of docking the battery pack in a middle or even upper zone of the support base.

In a further embodiment of the invention, the coupling device provides a pivot axis substantially parallel to a bottom of the support base for pivoting movement of the battery pack into the transport position. This helps optimize handling of the battery pack when mounting and removing from the backpack mount.

In another embodiment of the invention, the locking device has a locking slider with a locking hook which is arranged on the support base so that it can be moved between a release position and a locking position and which is designed for retaining a corresponding locking counter element of the battery pack in the support position. This represents a structurally simple and functionally advantageous embodiment of the immobilization device.

In a further alternative embodiment of the invention, the locking device has a locking lever which is arranged on the support base in such a way that it can pivot between a release position and a locking position and has a locking bracket. which is designed to fit behind a corresponding locking counter element of the battery pack in the support position. This also represents a structurally simple, user-friendly and functionally reliable embodiment of the immobilization device.

In one embodiment of the invention, the locking slider is in the locking position when the battery pack is not attached, thus having an initial slope that is designed to automatically move the locking slider toward the release position upon through interaction with the immobilizing counter element of the battery pack when the battery pack is attached to the base support is rotated to the support position. With this measure, the locking slider can automatically move out of the locking position when the battery pack is turned into its transport position, without having to be actuated separately by the user. In this case, the locking slider can preferably be prestressed in the direction of the locking position by a corresponding elastic prestressing element. The locking slide then moves into the release position against the action of the pressure element when the battery pack pivots into its transport position, and as soon as the battery pack has reached its transport position, the pressure element can automatically return the locking slider to its locking position.

In one embodiment of the invention, the locking bracket has a contact surface which runs in an arc at a non-constant distance from a pivot axis of the locking lever and against which the locking counter element can be positioned at a distance of the pivot axis that decreases as the lock lever pivots in the direction of the lock position. This facilitates a safe turning of the battery pack into its transport position on the support base. In particular, this special kinematics of the immobilization lever allows an optimal progression of the turning or holding force exerted on the battery pack.

In one embodiment of the invention, the locking slider or locking lever has a user-operated control element located on a side of the support base facing away from a battery pack engaging side of the support base. This makes handling easier for the user when moving the battery pack from its docking position to its transport position. For this, the user can actuate the locking slider or the locking lever from the side of the support base facing away from the side of the support base to engage the battery pack. Therefore, this operation is not hampered by the attached battery pack.

In another embodiment of the invention, the clamping device has a support spring arrangement that provides an elastic support with a spring force acting in the direction of outward rotation for the battery pack in the transport position. This contributes to a play-free and secure hold of the battery pack in its transport position on the support base. Since the spring force of the support spring arrangement acts on the battery pack in the direction of swinging out of the support base, the support spring arrangement can prevent unwanted impact of the battery pack against the rigid parts of the support base. It is desirable that the removal lock serves to lock removal of the battery pack due to the force of the supporting spring. This release lock can be released when the user wishes to remove the battery pack from the support base by first rotating it from its transport position to its docking position. Preferably, the locking slider or the locking lever act as such a rotation lock, alternatively a separate rotation lock can be provided. In another aspect, the invention provides a set of implements comprising a backpack-carrying device according to the invention and a backpack-carrying battery pack attachable thereto for supplying electrical power to manual electrical implements, in particular gardening and/or forestry implements. electrically powered. In particular, the battery pack can be one like the one disclosed in disclosure document EP3624212 A1.

In an embodiment of the invention, the device set further comprises a handheld electrical device that can be powered with electrical power from the battery pack.

Advantageous embodiments of the invention are shown in the drawings. These and other advantageous embodiments of the invention are indicated and described in more detail below. Therefore:

Fig. 1 shows a perspective front view of a back transport device,

Fig. 2 shows a perspective rear view of the carrying device on the back,

Fig. 3 shows a detailed view of an area III in Fig. 2,

Fig. 4 shows a longitudinal sectional view of a rear transport device with locking lever and a coupled battery pack in the coupled position,

Fig. 5 shows a detailed view of an upper part of Fig. 4,

Fig. 6 shows the view of Fig. 4 with the battery pack in transport position,

Fig. 7 shows the view of Fig. 5 with the battery pack in transport position,

Fig. 8 shows a perspective sectional view of a connection area of a hip belt unit and a shoulder belt unit of a back carrying device,

Fig. 9 shows a view corresponding to Fig. 1 with one strap omitted,

Fig. 10 shows a view corresponding to Fig. 9 with the belt omitted and the lap belt unit partially omitted,

Fig. 11 shows a rear view of the back transport device of Fig. 10,

Fig. 12 shows a view according to Fig. 5 for a back transport device with a fixed slider, Fig. 13 shows a perspective rear view of an area of the rear support of Fig. 12 that includes the immobilization slider,

Fig. 14 shows a schematic sectional view of the area of Fig. 13 with the battery pack of Fig. 12 in the docking position,

Fig. 15 shows the view of Fig. 14 with the battery pack in transport position and

Fig. 16 shows a schematic representation in block form of a set of devices with back support, battery pack and electrical device powered by the latter.

A back carrier device illustrated in Figs. 1 to 15 in various representations and variant embodiments can be used to carry any transportable object on the back of a user. For this purpose, the carrying device on the back has a support base 3, which serves to receive the object to be transported, for example by fixing the object to the support base 3 or by inserting the object into a receiving space in the support base. support 3 in a similar way to how it is done in a conventional backpack. In advantageous embodiments, the support base 3 has a plate-shaped structure, as shown. Alternatively, it can have any other structure known to the expert for this functional component of back transport devices of the type considered here, which does not require any further explanation. In addition, the back carrying device includes a carrying belt unit 4 for the supporting base 3. With the carrying strap unit 4, the user can carry the supporting base 3 with the object placed on or inside it. in her back.

In corresponding embodiments, the back-carrying device, as shown, is designed to carry a battery pack 2, which can in particular be a back-transportable battery pack for supplying electrical power to appliances. hand-held electric tools, such as electrically powered garden and/or forestry tools. To this end, in said embodiments, the back-carrying device has a holding device 6 for securely holding the battery pack 2 in a carrying position 7 on the support base 3.

The clamping device 6 comprises a coupling device 8 on the support base 3 for pivotally coupling the battery 2 in a coupling position AL, as shown for example in Figures 4, 5, 12 and 14, and a clamping device immobilization 9 on the support base 3 to retain the battery 2 in the transport position 7 pivoted towards the support base 3 opposite to the coupling position AL, as shown for example in Figures 6, 7 and 15. The device coupling 8 is arranged in a lower region 3c of the support base 3.

In the corresponding embodiments, the coupling device 8 provides a pivot axis SA substantially parallel to a bottom side 3a of the support base 3 for pivot movement of the battery pack 2 in the supporting position 7, as shown by example in the figures. 3, 4, 6 and 11. In advantageous embodiments, this pivot axis S ^a is located directly at the bottom of the support base 3a or at a relatively small vertical distance above it.

In a corresponding embodiment, the locking device 9 includes a locking slider 10 which is arranged on the support base 3 to be movable between a release position and a locking position 10a and has a locking hook 11 which is designed to hook behind a corresponding locking counter element 19 of the battery 2 in the support position 7. Such an implementation is illustrated in Figs. 12 to 15. The release position, which is not shown explicitly, is located vertically above from the fixed clamping position 10a shown.

In the corresponding embodiments, when the battery pack 2 is not attached, the lock slider 10 is in the lock position 10a, and the lock slider 10 has a sliding slope 10b that is designed to automatically move the lock slider. 10 towards the release position by interacting with the immobilization counter element 19 of the battery pack 2 when the attached battery pack 2 is rotated towards the support position 7. Optionally, on the support base 3 an elastic element of pressure, not shown, which pushes the locking slider into its locking position 10a. By turning the battery 2 into its transport position 7, the locking slider 10 moves from its locking position 10a to its release position, against the action of the pressure element, so that the battery 2 can rotate completely to its transport position 7, after which the pressing element automatically returns the locking slider 10 to its locking position 10a.

In corresponding embodiments, the locking hook 11 is designed with an inclined inner side 11a, as in the example of Figures 12 to 15, so that it securely holds the locking counter element 19 of the battery 2 in the manner of a hook. immobilization against forces acting in the direction of rotation. In other words, this inclined catch inner side 11a of the locking hook 11 counteracts an inadvertent slipping of the battery pack 2 from its supporting position 7.

In an alternative embodiment of the locking device 9, it has a locking lever 12 which is arranged on the support base 2 in such a way that it can pivot between a release position 12b and a locking position 12a and has a locking bracket 13 which is designed to fit behind a corresponding locking counter element 20 of the battery pack in the support position 7. One such embodiment of the locking device 9 can be seen in Figures 1, 2, 3 to 7 and 9 to eleven.

In corresponding embodiments, the locking bracket 13 has, as shown, a contact surface 13a which extends in an arc at a non-constant distance from a pivot axis S ^h of the locking lever. The locking counter element 20 of the battery 2 rests on the contact surface 13a of the locking bracket 13 at a distance A from the pivot axis S ^h of the locking lever 12, this distance A decreasing with increasing rotation of the locking lever 12 in the direction of the locking position 12a. Consequently, this distance A is minimum in the transport position 7 of the battery 2 or in the immobilization position 12a of the immobilization lever 12, as shown in Fig. 7, while it is significantly greater in the position of coupling AL of the battery 2, in which the battery 2 is located when its locking counter element 20 just enters the region of the locking lever 12 or its locking bracket 13, as shown in Fig. 5. This represents an advantageous force progression characteristic for the force exerted by the locking lever 12 on the battery pack 2 during rotation from the coupling position AL to the transport position 7.

Optionally, as shown, the locking lever 12 can be provided with a locking shoulder 13b or the like at its end of the contact surface 13a on the holding side, in order to additionally secure the battery pack 2 in place. support position 7 against unintentional rocking.

In corresponding embodiments, the locking slider 10 or the locking lever 12 comprises a control element 10c, 12c operated by the user and located on a side VS of the support base 3 facing away from an engagement side of the battery AS of the support base 3. In particular, the docking side AS may be a rear side of the support base 3 facing away from the user's back, in which case the VS side of the support base 3 facing facing away from the docking side AS is a front side of the support base 3 which faces the back of a user when carrying the carrying device on the back. In this case, the locking slider 10 or the locking lever 12 can be moved by the user from the locking position 10a, 12a to the release position 12b by the control element 10c, 12c on the front side RS of the support base 3 to allow the battery pack 2 to be rotated from its transport position 7 to its docking position AL and subsequently removed from the support base 3. In alternative embodiments, the locking slider 10 or the locking lever 12 is otherwise displaceable by the user from the locking position 10a, 12a to the release position 12b.

In corresponding embodiments, the clamping device 6 has a support spring arrangement 14 which provides elastic support with a spring force acting in the direction of swing out for the battery pack 2 in its support position 7. This support spring arrangement 14 allows the battery pack 2 to rest resiliently on the support base 2 when in its transport position 7, so that the support spring arrangement 14 can absorb or reduce shocks. of the battery pack 2 against the support base 3 and vice versa. Furthermore, the arrangement of the support spring 14 is suitable to keep the battery pack 2 in its support position 7 on the support base 2 without play. For example, the support spring arrangement 14 may comprise an arrangement of one or more leaf springs arranged on the support base 3, as shown in Figs. 12 to 15. In alternative embodiments, the support spring arrangement may additionally or alternatively comprise an arrangement of one or more rubber stops, in particular round rubber stops, arranged on the support base.

In corresponding embodiments, the back support device comprises the support base 3 and the support belt unit 4 in one embodiment in which the support belt unit 4 comprises a shoulder belt unit 5, a support belt unit pelvic belt unit 15 and a hinge unit that articulately connects the pelvic belt unit 15 to the support base 3. The hinge unit includes a double hinge 16 by which the pelvic belt unit 15 is connected to the support base 3 to be able to rotate about two pivot axes GS1, GS2, as can be seen in particular in Figures 1 and 8 to 10. The pivot axis GS1 runs essentially parallel to a plate plane PT of the support base 3, while the other pivot axis GS2 runs essentially perpendicular to this plate plane PT of the support base 3. By means of this double joint 16, the pelvic belt unit 15 can rotate to the desired extent both in t around the preferably horizontal pivot axis GS1 in the direction of the front side RS or the rear side AS of the supporting base 3 and around the preferably equally horizontal pivot axis GS2 laterally relative to the supporting base 3. Preferably, the Articulation unit or double articulation 16 consists of a separate component, which is connected to the pelvic belt unit 15 on the one hand and to the support base 3 on the other, as in the shown exemplary embodiment.

In advantageous embodiments, the pivot axis GS1 essentially runs between and is parallel to two side edges SK1, SK2 of the lap belt unit 15 on the one hand and of the support base 3 on the other. seen in particular in FIGS. 8 to 11, and the pivot axis GS2 runs offset relative to this pivot axis GS1 in the direction away from the pelvic belt unit 15, namely offset upwards in the shown exemplary embodiment. In this way an optimal movement kinematics for the hipbelt unit 15 in relation to the support base 3 is achieved for the corresponding applications. In corresponding implementations, the support base 3 forms a rigid or flex-rigid component, alternatively it can be implemented as a flex-soft component.

In corresponding embodiments, the carrying device on the back includes the support base 3 and the support strap unit 4 in one embodiment in which the support strap unit comprises at least one shoulder strap unit 5 that it can be removably connected to the support base 3. In these embodiments, the shoulder strap unit 5 comprises at least one flexibly rigid strap support 17, which can be removably hooked to the support base 3 at various heights by means of a hooking mechanism 22, and comprises at least one flexible strap 18 that can be connected to the strap support 17. Therefore, in this case, the belt support 17 represents a rigid component that is rigid in relation to the flexible strap of the belt 18. The shown embodiments include this type of shoulder belt unit 5, as can be seen in the corresponding Figures. In corresponding embodiments, the shoulder belt unit 5 includes only one flexibly rigid belt holder to which, for example, two flexible belt straps can be arranged to be worn by the user, or the shoulder belt unit 5 includes , as shown, two flexibly rigid belt holders 17 to each of which a flexible belt strap 18 or a common belt strap can be connected.

In advantageous embodiments, the latch mechanism 22 provides a plurality of latches 23 for the at least one strap holder 17 at different heights on the support base 3. Each latch 23 includes a latch release position 24 and a locking position. detent 25 moved up from the detent release position. The belt holder 17 is height-adjustable on the holder base 2 between the release position of the latch 24 and the latch locking position 25 of the selected latch 23. In the unlocked position 24, the belt holder 17 can be fixed or withdraw from the support base 3 at the desired height. In the locked position 25, the belt holder 17 is hooked to the support base 3 and thus secured against detachment from the support base 3. The belt holder 17 can only be released from the support base 3 if it first moves downwards from the locking position of the latch 25 to the releasing position of the latch 24. This has the advantage that the weight of the support base 3, which acts downwards and thus tries to displacing the support base 3 downwards in relation to the belt support 17 held by the user through the rest of the shoulder belt unit 5, cannot cause accidental release of the belt support 17 from the support base 3 Rather, the weight of the support base 3, including the weight of any objects held or picked up on it, securely holds the strap retainer 17 in its latch 25 locking position.

In advantageous embodiments, the hook mechanism 22 comprises a hook lock 26 that keeps at least one strap holder 17 locked in the respective hook lock position 25. In the embodiment shown, the hook latch 26 is formed by a button latch that can be unlocked by the user. When the user wishes to release the belt holder lock 17 in its latch lock position 25 in order to move the belt holder 17 from its latch lock position 25 to its latch release position 24, the user presses the button lock.

Fig. 16 illustrates in block diagram form a set of devices with a back carrier device 1 and with the back carrier battery pack 2 which can be coupled to it. Optionally, the set of implements further comprises a manual electric implement 27, such as an electrically powered gardening and/or forestry implement, which can be supplied with electrical energy by the battery pack 2. The battery pack 2 can be detachably attached to the dongle device 1 in the manner described. The electrical device 27 may be electrically coupled to the battery pack 2 and/or to the backpack 1 by means of a flexible electrical cable or, alternatively, by direct connection. Furthermore, depending on the design of the system, the electrical device 27 may be mechanically coupled to the battery pack 2 and/or to the rear support device 1.

As is clear from the shown and previously mentioned embodiments, the invention provides a carrying device on the back with advantageous functional characteristics as regards the adjustment of the belt height, the connection of the pelvic belt unit to the support base and/or attachment of a back support battery pack. The transport device on the back is particularly suitable for transporting a battery pack, however, depending on the design, it is alternatively or additionally also suitable for transporting other objects that are attached to the support base or housed in, for example, a container or bag from the support base.

Claims (13)

1. Carrying device on the back with - a support base (3) and - a carrying belt unit (4) for the support base (3), wherein the carrying belt unit (4) has a shoulder belt unit (5), a lap belt unit (15) and an articulation unit that connects the pelvic belt unit (15) in an articulated manner to the support base (3) and contains a double articulation (16) by means of which the pelvic belt unit (15) is connected to the base of support (3) such that it can pivot about two pivot axes (GS1, GS2), wherein one (GS1) of the two pivot axes (GS1, GS2) extends substantially parallel to a plane of the plate (P ^t ) of the support base (3) and the other pivot axis (GS2) extends substantially perpendicular to the plane of the plate (P ^t ) of the support base (3), characterized in that - one pivot axis (GS1) extends substantially between two facing lateral edges (SK1, SK2) of the pelvic belt unit (15) and the support base (3) and is parallel to them, and the other pivot axis (GS2) extends offset with respect to this pivot axis (GS1) in the opposite direction to the pelvic belt unit (15). Carrying device on the back according to claim 1, further characterized in that the hinge unit is formed by a separate component, which is connected on the one hand to the pelvic belt unit (15) and on the other the other, to the support base (3). Back carrying device according to claim 1 or 2, further characterized in that the shoulder belt unit (5) is detachably attachable to the support base (3) and comprises at least a rigid belt holder (17), which can be detachably attached to the support base (3) at a plurality of different heights by means of a locking mechanism (22), and at least one flexible belt strap (18) connected to it. Carrying device on the back according to claim 3, further characterized in that the hooking mechanism provides a plurality of latches (23) for the at least one belt holder (17) at different heights on the base of the support (3), wherein the respective latch includes a latch release position (24) and a latch locking position (25) that is offset upwards relative to the latch release position (24) and between the which the belt support (17) is vertically movable on the support base (3). Back carrying device according to claim 3 or 4, further characterized in that the hooking mechanism has a releasable hooking lock (26) which keeps the at least one belt holder (17) locked in a respective hitch holding position. Carrying device on the back according to any one of claims 1 to 5, further characterized in that it is configured to carry a battery pack on the back for supplying electric power to hand-held electrical appliances, in particular garden and garden appliances. / or electrically powered forest processing, and comprises a clamping device (6) for removably holding the battery pack in a transport position (7) on the support base (3), where the clamping device ( 6) comprises a coupling device (8) on the support base (3) to pivotally couple the battery pack in a coupling position (AL) and an immobilization device (9) on the support base (3 ) to retain the battery pack in the transport position (7) by pivoting towards the support base (3) in relation to the docking position (AL) and where the docking device (8) is attached. arranged in a lower region (3u) of the support base (3). Back carrying device according to claim 6, further characterized in that the coupling device (8) provides a pivot axis (S ^a ) substantially parallel to a lower part (3a) of the support base (3) for the pivoting movement of the battery pack in the transport position (7). Carrying device on the back according to claim 6 or 7, further characterized in that - the restraint device (9) has a restraint slider (10) which is arranged slidably on the support base ( 3) between a release position and a locking position (10a) and has a locking hook (11) that is designed to fit behind a corresponding locking counter element of the battery pack in the transport position (7), or - The locking device (9) has a locking lever (12) which is arranged on the support base (3) so that it can pivot between a release position (12b) and a locking position (12a) and has a locking bracket (13) which is designed to be latched behind a corresponding locking counter element of the battery pack in the transport position (7). Carrying device on the back according to claim 8, further characterized in that, when the battery pack is not attached, the locking slider (10) is in the locking position (10a) and the locking slider immobilization (10) presents a sliding slope (10b) that is designed to moving the locking slider (10) automatically in the direction of the release position (12b) cooperating with the locking counter element when the attached battery pack pivots in the direction of the transport position (7). Carrying device on the back according to claim 8, further characterized in that the immobilization support (13) has a contact surface (13a) which extends in an arc at a non-constant distance from an axis (S ^h ) of the locking lever (12), against which the counter-retaining element can be positioned at a distance (A) from the pivot axis (S ^a ) that decreases with the increase in the pivot of the locking lever. lock (12) in the direction of the lock position (10a). Back carrying device according to one of Claims 8 to 10, further characterized in that the locking slider (10) or the locking lever (12) has a user-operated control element (10c , 12c) located on a side (VS) of the support base (3) that is away from a battery pack coupling side (AS) of the support base (3). Back carrying device according to any one of claims 6 to 11, further characterized in that the retaining device (6) comprises a supporting spring arrangement (14) providing elastic support with a force of spring acting in the direction of rotation out for the battery pack in the transport position (7). 12. Set of apparatus with - a back carrying device (1) according to any of claims 1 to 12 and - a battery pack (2) which can be carried on the back and which can be attached to the back carrying device intended to supply electrical power to hand-held electrical appliances, in particular to electrical gardening and forest processing appliances. Appliance set according to claim 13 with a hand-held electrical appliance (27) that can be supplied with electrical energy from the battery pack, in particular an electrically driven gardening and/or forestry appliance.